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Luis Saez riding Maximum Security, second from right, goes around turn four with Flavien Prat riding Country House, left, Tyler Gaffalione riding War of Will and John Velazquez riding Code of Honor, right, during the 145th running of the Kentucky Derby horse race at Churchill Downs Saturday, May 4, 2019, in Louisville, Ky.

An appeal filed by the co-owner of Maximum Security, the horse that crossed the finish line first at the Kentucky Derby but was disqualified, was quickly denied Monday by the state racing commission, NBC News reported.

The Kentucky Horse Racing Commission said in a letter that the request was "moot" because the decision to disqualify was not subject to appeal.

"The stewards unanimously disqualified Maximum Security following two objections lodged immediately after the 145th running of the Kentucky Derby and after a thorough review of the race replay," the commission's letter stated. "That determination is not subject to an appeal."